Re: Linux Serial Programming

From: Grant Edwards (grante_at_visi.com)
Date: 04/18/04

  • Next message: ibwhoib: "Re: Linux Serial Programming" 
    Date: 18 Apr 2004 02:55:02 GMT

    In article <6Hkgc.34506$_g4.3436941@news4.srv.hcvlny.cv.net>, ibwhoib wrote:

    > char cmd[7];

    > cmd[0] = 42;
    > cmd[1] = 0;
    > cmd[2] = 0;
    > cmd[3] = 132;
    > cmd[4] = 177;
    > cmd[5] = 0;
    > cmd[6] = 119;
    > cmd[7] = 188;

    You declared the array to hold 7 bytes, then filled it with 8
    bytes.

    > I then try to write the command to the port.
    >
    > int written;
    > written = write(fd, cmd, 7);

    That only sent 7 bytes (42 through 119).

    > My first question is is this the correct way to send this command?

    I think you need to work on your counting skills. 

    -- 
Grant Edwards                   grante             Yow!  An INK-LING? Sure --
                                  at               TAKE one!! Did you BUY any
                               visi.com            COMMUNIST UNIFORMS??
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